87841621 has 8 divisors (see below), whose sum is σ = 100867904. Its totient is φ = 74934720.

The previous prime is 87841597. The next prime is 87841627. The reversal of 87841621 is 12614878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87841621 - 2⁹ = 87841109 is a prime.

It is a super-3 number, since 3×87841621³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87841627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28260 + ... + 31213.

It is an arithmetic number, because the mean of its divisors is an integer number (12608488).

Almost surely, 2^87841621 is an apocalyptic number.

It is an amenable number.

87841621 is a deficient number, since it is larger than the sum of its proper divisors (13026283).

87841621 is a wasteful number, since it uses less digits than its factorization.

87841621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59691.

The product of its digits is 21504, while the sum is 37.

The square root of 87841621 is about 9372.3860889317. The cubic root of 87841621 is about 444.5290156401.

The spelling of 87841621 in words is "eighty-seven million, eight hundred forty-one thousand, six hundred twenty-one".